Walrus Audio Polychrome, Analogue flanger, Effect Pedal for Electric Guitar, controls: rate, depth, sweep, feedback, D-F-V, shape switch, voice switch, 2 flanger types ""voices"" selectable (traditional / complex & notched), choice of 3 LFO waveforms: Sine, Triangle or Random, D-F-V (Dry Flange Vibrato), controls the mixing ratio of effect to dry signal, controllable from completely dry signal, to classic flanger, to pitch vibrato, Rate control determines the LFO speed, from super slow 0. 1 Hz up to 8 Hz, Rate LED indicates the LFO speed, Depth control determines the strength of the modulation, Sweep control shifts the modulated frequency range: From ""deep flange"" to more traditional sounds, Feedback control for subtle to dramatic flange effect, True bypass with soft-switch relay, Smart Momenary bypass function, Dimensions (D x W x H): 121 x 66 x 41 mm, Weight: 0.35 kg, Powered by 9-volt DC power supply (not included), Power consumption: 100mA (minimum), Made in USA